diff options
| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2024-05-06 13:16:02 +0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2024-05-06 14:12:40 -0500 |
| commit | f3d049b35b01fff656d720606fcbab0b819f26d1 (patch) | |
| tree | b156ee452ca10431268529052acb36fd388cd6f8 /drivers/pci | |
| parent | 2e0239d47d75e08f9a39f8360610e490c39ea696 (diff) | |
| download | linux-f3d049b35b01fff656d720606fcbab0b819f26d1.tar.gz | |
PCI/ASPM: Restore parent state to parent, child state to child
There's a typo that makes parent device uses child LNKCTL value and vice
versa. This causes Micron NVMe to trigger a reboot upon system resume.
Correct the typo to fix the issue.
Fixes: 64dbb2d70744 ("PCI/ASPM: Disable L1 before configuring L1 Substates")
Link: https://lore.kernel.org/r/20240506051602.1990743-1-kai.heng.feng@canonical.com
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
[bhelgaas: update subject]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pcie/aspm.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index 2428d278e015ab..47761c7ef267ab 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -177,8 +177,8 @@ void pci_restore_aspm_l1ss_state(struct pci_dev *pdev) /* Restore L0s/L1 if they were enabled */ if (FIELD_GET(PCI_EXP_LNKCTL_ASPMC, clnkctl) || FIELD_GET(PCI_EXP_LNKCTL_ASPMC, plnkctl)) { - pcie_capability_write_word(parent, PCI_EXP_LNKCTL, clnkctl); - pcie_capability_write_word(pdev, PCI_EXP_LNKCTL, plnkctl); + pcie_capability_write_word(parent, PCI_EXP_LNKCTL, plnkctl); + pcie_capability_write_word(pdev, PCI_EXP_LNKCTL, clnkctl); } } |